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Ritvo Autism Asperger Diagnostic Scale – Revised


The RAADS-R is an 80-item scale specifically designed to assist clinicians diagnosing AD in adults 18 years and older. It contains a total of 80 questions. Sixty-four short questions identify symptomatic behaviors that are scored on a 4-point Likert scale that takes into account developmental factors (true now and when I was young = 3, true only now = 2, true only when I was younger than 16 years old = 1, and never true = 0). It also contains 17 non-symptomatic questions that are scored in reverse order (true now and when I was young = 0, true only now = 1, true only when I was younger than 16 years old = 2, and never true = 3). These 16 questions are identified on the scale by an asterisk next to their question number.

Historical Background

The original version of the Ritvo Autism Asperger Diagnostic Scale (the RAADS) was developed to assist clinicians diagnosing autistic disorder in adults (18 years and older). It...

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References and Readings

  • Andersen, L. M. J., Näswall, K., Manouilenko, I., Nylander, L., Edgar, J., Ritvo, R. A. et al. (2011). The Swedish version of the Ritvo autism and asperger diagnostic scale: revised (RAADS-R). A validation study of a rating scale for adults. Journal of Autism Developmental. Disorders. (Published Springer Link, Online First™, 17 February 2011).

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  • Ritvo, R. A., Ritvo, E. R., Guthrie, D., Ritvo, M. J., Hufnagel, D. H., McMahon, W. et al. (2011). The Ritvo autism asperger diagnostic scale-revised (RAADS-R). A scale to assist the diagnosis of autism spectrum disorder in adults: An international validation study. Journal of Autism Developmental Disorders. (in press) (Springer link,

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Correspondence to Ariella Riva Ritvo Ph.D. .

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© 2013 Springer Science+Business Media New York

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Ritvo, A.R. (2013). RAADS-R. In: Volkmar, F.R. (eds) Encyclopedia of Autism Spectrum Disorders. Springer, New York, NY.

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  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4419-1697-6

  • Online ISBN: 978-1-4419-1698-3

  • eBook Packages: Behavioral Science

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